Overclocking FX-4100

[overchecking]

Hi new here and to overclocking so bare with me for any noobie errors and tech knowledge i spurt out.

Ok i know from my research the 4100 is apprentley crap, I should have done that before i bought it but i'm stuck with it until i fry it or something other happens and i upgrade it.

I have an Asus M5A78L-M/USB3 with stock H&F (Os Win 7 64, G7 580w PSU), im awaiting on a Zalman HF coming throught post.

So this bulldozer can overclock apparently to stable 4.6MHz on stock H&F and without any voltage adjustments.
Mine don't it reboots at 23x when i run Prime95 Torture test.

Using Cinebench and Prime95 i ran a few tests with multipiers, stock is 18x at 3.6MHz

I started from 21.5x with idea of going up to 23x in .5MHz increments.

Cinebench 3.14pts @ 21.5x
Cinebench 3.05pts @ 22x
Cinebench 3.04pts @ 22.5x

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Prime 95 was stable on 21.5x after 20 minutes of torture but recieved an error "HW Failure & something about rounding" , On 22x, worker 4 crashed after 5 minutes and worker 3 after 8 minutes

My max core voltage was 1.428v at 22x 4419.8MHz
IDLE 1.008v
CPU temps never raised above 66c

Is my PSU to weak , does my core voltage need increased or am i my wasting time.

I'd appricate any guidance and help tweeking it because i have little knowledge on OC'ing but i'm curious to how far i can push it and learn a little.

CPUz Validation
http://valid.canardpc.com/show_oc.php?id=2160685

Thank You

 

[overchecking]

With the new HF on it way, i'm hoping that will knock a few degrees off.

Whats the optimal range for the AMD's?

Thanks

 

[overchecking]

Ok with the Zalman installed, I'm pretty happy it knock off 20c ! for a cheap & cheerful air unit

Running Prime95 for 30mins